Water supplied to homes in Cleveland, Bradley County comes from surface water sources managed by Cleveland Utilities. This system serves over 95,000 people through more than 37,000 connections. Water is treated and distributed to residential taps, but questions often arise about specific substances like algal toxins.
How do algal toxins enter Bradley County’s water system?
Algal toxins, also known as cyanotoxins, are produced by certain types of algae in surface water. These toxins can enter local water supplies when algae grow in source lakes, reservoirs, or rivers. While surface water sources are more exposed to such natural occurrences, municipal treatment processes aim to limit their presence in delivered water.
How many samples were taken in Cleveland, and what does the sample size imply?
Between August and November 2020, Cleveland Utilities collected 32 samples to monitor algal toxins including microcystins, cylindrospermopsin, and anatoxin-a. Each toxin was measured against reporting levels set by the EPA. While 32 samples provide insight into the system-wide presence of these toxins, this is a snapshot and does not reflect water quality at every individual home or tap.
What do the measured toxin levels in Cleveland’s water tell us?
None of the 32 samples detected algal toxin levels above EPA reporting thresholds (0.3 µg/L for microcystins, 0.09 µg/L for cylindrospermopsin, 0.03 µg/L for anatoxin-a). The EPA has not established maximum contaminant levels (MCLs) for these toxins but provides health advisories to guide understanding of potential effects. Detection below reporting levels means that if toxins are present, they are at concentrations too low to be measured reliably, which is encouraging but not an absolute guarantee for every tap.
How should Cleveland’s data be compared with neighboring counties?
Comparing algal toxin data across counties can provide context, but it’s important not to assume unique risk based on regional numbers alone. Each water system’s source water conditions, treatment protocols, and sampling strategies vary. Only detailed data specific to the local water source and treatment can inform individual households’ water quality with accuracy.
What information should residents gather before seeking treatment advice?
Before exploring filtration options, residents should note their household water demand, any current water quality test results, and specific concerns such as taste or odor issues. Testing water directly from the tap is essential to understand the home's actual water profile, especially for algal toxins, which require specialized laboratory analysis.
How to reduce algal toxins in household water
For homes concerned about the possibility of algal toxins, the documented solution is the C-Series Algal Toxins (Cyanotoxins) Filter. This system ships ready to configure for residential use and can reduce algal toxin levels effectively when matched to household water demand. Considering your measured needs and water profile can help in selecting the appropriate filter configuration.
Where this information comes from
Source: EPA SDWIS public water system record. Sampled 2020-11-17. These figures describe the public water system's record, not the plumbing inside any individual building.
On record: EPA UCMR4 monitoring (2018-2020) for Cleveland Utilities (TN0000117), TN: 96 results across 3 listed contaminants, 0 detections above the reporting level; nothing detected above the method reporting level